/**
 * Copyright 2010-2011 initialize4j.org
 * 
 * <pre>
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * </pre>
 * 
 * <pre>
 * http://www.apache.org/licenses/LICENSE-2.0
 * </pre>
 * 
 * <pre>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 * </pre>
 */
package org.initialize4j.annotations;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import com.google.common.base.Predicate;

/**
 * Annotation for <i>When<i> clauses holding references to {@link Predicate}
 * implementation classes.
 * 
 * @author <a href="hillger.t@gmail.com">hillger.t</a>
 */
@Target(ElementType.ANNOTATION_TYPE)
@Retention(RetentionPolicy.RUNTIME)
public @interface WhenCondition {

	/**
	 * Returns a {@link Predicate} class to obtain a desired condition.
	 * 
	 * @return
	 */
	Class<? extends Predicate<?>> value();
}
